Most people using AI to write code are still reviewing every line. Kieran Klaassen stopped doing that months ago.

Kieran Klaassen, CTO of Cora at Every, on Peter Yang’s channel, He calls his approach compound engineering:

AI can learn. If you invest time to have the AI learn what you like and learn what it does wrong, it won’t do it the next time. So that’s the seed for compound engineering. There are four steps: planning first, working—which is just doing the work from the plan—then assessing and reviewing, making sure the work that’s done is correct, and then taking the learnings from that process and codifying them. So the next time you create a plan, it’s there. It learned.

Plan, build, review, codify. Each cycle teaches the AI something it keeps. You hit a problem, you capture the fix, and that fix lives in your repo as documentation the AI reads next time. The learnings compound across sessions.

The result: Klaassen says 100% of his code is now AI-written. He hasn’t opened Cursor in three months. But he’s not winging it. On what that trust actually requires:

It’s a little bit more of like, I trust you. I don’t need to look at all the code. I don’t need to read all the code, but I have systems and ways I work with AI that I trust, and through that I can let AI do things.

That trust is earned through the loop. Mistakes get caught, codified, and they don’t happen twice. Klaassen compares it to onboarding:

It’s similar to onboarding a person on your team. You need to get them on board, get them used to your code. But once that is done, you can let them go and really just run with it.